// Hardware related definitions for Heltec LoRa-32 Board #define CFG_sx1276_radio 1 #define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C // OLED-Display on board //#define DISPLAY_FLIP 1 // uncomment this for rotated display #define HAS_LED GPIO_NUM_25 // white LED on board #define HAS_BUTTON GPIO_NUM_0 // button "PROG" on board // re-define pin definitions of pins_arduino.h #define PIN_SPI_SS \ GPIO_NUM_18 // ESP32 GPIO18 (Pin18) -- SX1276 NSS (Pin19) SPI Chip Select // Input #define PIN_SPI_MOSI \ GPIO_NUM_27 // ESP32 GPIO27 (Pin27) -- SX1276 MOSI (Pin18) SPI Data Input #define PIN_SPI_MISO \ GPIO_NUM_19 // ESP32 GPIO19 (Pin19) -- SX1276 MISO (Pin17) SPI Data Output #define PIN_SPI_SCK \ GPIO_NUM_5 // ESP32 GPIO5 (Pin5) -- SX1276 SCK (Pin16) SPI Clock Input // non arduino pin definitions #define RST \ GPIO_NUM_14 // ESP32 GPIO14 (Pin14) -- SX1276 NRESET (Pin7) Reset Trigger // Input #define DIO0 \ GPIO_NUM_26 // ESP32 GPIO26 (Pin15) -- SX1276 DIO0 (Pin8) used by LMIC for // detecting LoRa RX_Done & TX_Done #define DIO1 \ GPIO_NUM_33 // ESP32 GPIO33 (Pin13) -- SX1276 DIO1 (Pin9) used by LMIC for // detecting LoRa RX_Timeout #define DIO2 \ LMIC_UNUSED_PIN // 32 ESP32 GPIO32 (Pin12) -- SX1276 DIO2 (Pin10) not used by // LMIC for LoRa (Timeout for FSK only) // Hardware pin definitions for Heltec LoRa-32 Board with OLED SSD1306 I2C // Display #define OLED_RST GPIO_NUM_16 // ESP32 GPIO16 (Pin16) -- SD1306 RST #define OLED_SDA GPIO_NUM_4 // ESP32 GPIO4 (Pin4) -- SD1306 D1+D2 #define OLED_SCL GPIO_NUM_15 // ESP32 GPIO15 (Pin15) -- SD1306 D0